I think with vaccines it is important to remember that the JCVI (an independent body by the way) hasnt said that they will NOT vaccine the over 12s just that a decision hasnt been made.
With the school holidays coming and a lack of supply we should be pleased they are taking there time. The US and Israel started when the other age groups had been completed its just they had a much lower uptake in the over 18s.
There are issues - there is an invesigation into a death
www.independent.co.uk/news/world/americas/covid-vaccine-pfizer-michigan-cdc-b1878262.html
which may come to nothing but I think it is good to circumspect. Yesterday when I had my second vaccine there was a note (the nurse said it was a new thing in the past week) that raised the myocarditis issue particularly in young men under 18 after the second dose.
The UK havent actually second dosed many under 40 men yet - shouldnt we see what are own figures are on this now that it has been seen to be a problem.
This decision needs to be one that is taken slowly - I can see why especially if you have CEV over 12 you want it but ethically saying it is ok for them and then realising there are more risks attached than you thought it dodgy.
And personal responsibility - for a 12+ where does that happen - whose responsibility is it?
I want to give my 12 year old the vaccine - I do. I can see the benefits to it but I also want to make sure that when I do that the risks of it have been properly weighed up. It isnt quite the right time yet and this isnt a decision that should be rushed at all.